However, there was no report of any casualty.
Hundreds of protesters gathered at the Azad Maidan Ground in south Mumbai this afternoon following a call by a city-based organisation Raza Academy to denounce the violence in Assam.
Azad Maidan Ground is located near Mumbai civic body headquarters and CST Mumbai railway station.
The protesters suddenly turned violent and torched a media vehicle and damaged buses. They also pelted stones.
Police opened fire in the air and resorted to lathi-charge to disperse the mob, said a policeman deployed at the Azad Maidan.